Speed-measure.



` N.o.895,484.1 'I PATBNEDAUG1I.1QGS.

J. MILLIS. K

SPEED MEASURE.

ReLlcATloN rum: Mmm, ma. I il' Y UJ/wwsesf I 'mxwfmf l f4/@,Qy 1 QAM mas.

f speed measures,

' UNITED STATES PATENT @FFI CHARLIE J# MILLIS,`OF PONTIAC, Anoniem, AssIGNoR 0F .ONE-ametro ,vILLIAM n^\RT\\'1G, oF.Dn-rno1r, MICHIGAN. 'A

SPEED-MEASURE.

To all whom may concern:

Be it known. that I, CHARLIE J. MILLis, a citizen of the United States, residing at Pontiac, 1n the county of Oakland'and Stat-e ofv invented a new and useful of which the following 1s a \lichigan. have Speed-Measure, specification.

)ly invention relates to means for facilitating the use and increasing the accuracy of 4and its object is to rovide a device whereby a watch may be ield in juxtaposition to a revolution counter so that the speed of revolving shafts-may be easily determined.

This invention consists in a forked shaped device which is adapted to be secured to the frame of a revolution counter for the purpose of holding a watch in such position that its face can easily be read by the opera-tor.

It further vconsists in forming this" device vof a non-conductor so that the speed of a rotat-ing body charged with electricity can be taken without endangering the operator.

In the accom anying drawings Figure l is a view of a revo ution counter provided with my improvement and a. watch held in position by the same. Fi 2 isa central transverse cross section of t e watch holder taken on a plane at right angles to ig. 1. Fig. -3 is a similar cross seetipn showing the holder formed on a non-conductor.

Similar reference eharactels refer to like parts throughout the several views, It is often difficult to measure the speed of revolving shafts by means of an ordinary revolution counter, because the location of the shaftrenders it d itiicult to carefully note the position of the hands of t-he watch employed, -atthe instant the revolution counter begins to run, and also at the instant that it stops.V

-My improved construction renders it possible to accurately determine the time during which -the revolution counter is operating and thereby renders it possible to correctly measure the speed of the revolving body.

In the accompanying drawings the frame 1, the stem 2 having a worm 3, the gradu` ated worm wheel 4 and the pointer 5 of the revolution. counter are of any well known or desirable construction. The watch 6 is preferably provided with a split-seconds hand 7. A fork 8, usually of spring-metal has secured to it a stud 9 which engages the frame 1 of the. revolution counter. This Specification of Letters Patent. Application tiled March 27, 1908. Serial No. 423,504.

thisvfork 8 of spring metal, a fork l0 of guttepercha, induratediber or other non-conductor may be employed, which may be secured to the frame 1 by means of the stud 11. The watch 6 is so constructed that upon ressing down the crown 12 the split seconds land 7 will be released, or will be stopped, or will be snapped hack to normal osition which is at 12. rPhe fork 8 shou d be of such a size and so formed to snugly hold the wat-ch.

The hand 7 being at 12, the operation is as follows: The op'erator holds the Watch in the palm of his hand his inst and second fingers extendingaround the fork-8 on each side of the center, his thumb rest-ing on the crown 12. He then pushes the oint of the stem 2 into the center of the siaft, at theV same time pressing down the crown 12, releasing the split seconds hand, which will then begin to indicate elapsed time. After the desired length of time has passed, usually about a minute, the operator presses down the crown 12, at the same instant withdraxw ing the stem 2 from contact with the revolving shaft. As the hand 7 stops at this instant., the operator having before. him the number of 'revolutions and the elapsed time, can easily determine the speed of the shaft.

While this 'arrangement is especially adapted for` measuring speed where it is dil'b cult or im ossible to read the time, an ordinary watcii provided merely with t-he usual seconds hand 14 may be employed Where it is possible to watch the same, it being only necessary to note the position of the seconds hand 14 at the beginning` and at the end of the time the stem 2 is in concaet with the revolving shaft and then calculate the speed as before indicated. It will be noted that this watch holder may be employed inconnection with any style of speed measure to which it can be attached. is em iloyed, the operator is enabled to hold himse f in position with the other, which is often of the greatest necessity. A

Havin0r now explained my improvements, what I claim as my invention and desire to secure by Letters Patent is:

1. A device for attaching a watch to a rotation counter, comprising a holder in the form of a troughshaped segment 'of a. circle having .means at a point intermediate its ends 'y fork 'is semi-circularl crosssection, and preferably forms a half-ring. Instead of As but one hand to rigidly attach the same to a part'of the rolaced 'm the holder, said holder and watch .l tation counter, whereb when a watch is orm a handle to manipulate the rotation paced i11- thc holder, said holder and Watch counter. Y l form a. handle to manipulate the rotation In testimony whereof I have signed this 15 s counter. specification in the presehc'e of two subscrib- 2. A. device for attaching a watch to a romg Witnesses;

tation counter, compris'm a non-confinati fr A trough-shaped part-ring iglaving means plih' CHARLIE J MILLIS jecting from the same lntermediate its ends Witnesses: V

lo to rigidly attach the same 'to a part of thoro.v V. J. HART'WIG,

tation couhter, whereby when a watch' is E. M` BROWN. g 

